Heart Rate Experiments For Kids

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PULSE TRANS experiment and NIGHT

Period of 4 to 6 months

Heart Rate

Both at rest 1 and rest 2, and in quiet sleep was a gradual increase in mean heart rate monitor wдhrend the entire flight. Especially in the first 2 to 3 months after the beginning of flight to the rise of the rest verstдrkte value and still took significantly after the end of the flight.

Valsalva and Mьller erhцhten experiments the heart rate only slightly, while at the end of the third month an increase in heart rate gegenьber the resting heart rate of Valsalvamaneuvers wдhrend could be observed.

Vagal tone

Wдhrend of the month was the second flight of vagal tone, which plays an important role as a protective factor against heart attack and cardiac death plцtzlichen on hцchsten and decreased after the flight to lower values ​​than the Vorflugwerte. This decrease in vagal tone during reentry into the earth’s gravity could be monitored continuously and displayed the StreЯ, the fьhrte by Rьckkehr in severity to a reduction of vagal tone on the heart. The Rьckkehr in the severity represents a strong stress factor and resulted in a decreased vagal tone wдhrend the rest, and in a reduced vagal tone or stдrker wдhrend the burden of dynamometry.

Interesting results showed the Valsalva experiment: Wдhrend in the course of the experiment the vagus Mьller verдnderte hardly the erhцhte vagal tone in spite of the Valsalva experiment simultaneously observed increase in heart rate. Ausgeprдgt stдrksten was on the increase of vagal tone in the Nachfluguntersuchungen.

Ballisto and Seismoamplituden

The amplitudes of Ballistocardiogramms showed at the beginning of the flight wдhrend both phases as well as the rest of dynamometry wдhrend an increase that is special wдhrend the ausgeprдgt dynamometry. After the flight of this increase, which also revealed the second flight wдhrend month reduction was reduced to Vorflugwerte.

A дhnlicher effect was also observed in Seismocardiogramm. Although the rest of the amplitudes of weightlessness Seismocardiogramms wдhrend were not particularly erhцht that Дnderungen wдhrend were clearly observed the dynamometry.

Amplitude of the electrocardiogram

The electrical amplitude ECG showed an increase at the beginning of the flight and a continuous rise further until the end of the flight. Even the wдhrend Nachflugphase each experiment showed little difference parts. The increase was observed in the Vorflugphase wдhrend or no longer available after the flight.

Autonomic control of heart rate in Album list

In the course of the flight experiment in all phases of the observed increase in heart rate could be partly due to the decrease in vagal tone erklдrt that was found after the flight and especially in the spдteren flight phases.

Pulse wave velocity

The pulse wave velocity was determined from the time difference of arrival times of the pulse waves at the carotid artery and the finger or FuЯpulsankunftszeit. The recovered under the Berьcksichtigung Arterienlдnge pulse wave velocity was drawn wдhrend the resting phase 1 and 2 fьr finger and FuЯarterien. It turned out daЯ the pulse wave velocity in the arm arteries дhnlich of manufacture of pulse wave velocity in the arteries of the leg about 5 to 6 m / sec. Months after the second flight was a significant increase in resting pulse wave velocity and in the arm, than for observed in the arteries of both legs rest.

Ultra long flight duration 14 months

Heart Rate

Wдhrend of rest periods was the heart rate while cosmonaut Dr. Polyakov largely stable.Only after the flight, a remarkable increase in heart rate was observed. The increase in heart rate, which accounted for only 30% of the other cosmonauts ьblichen AusmaЯes took during the flight after a high vorьbergehenden even more. It was therefore also in this experiment, the autonomous Flexibilitдt reduced, especially after the flight was remarkable.Especially towards the end of the flight showed Valsalva and Mьller experiments very low heart rate changes, without doubts.

Vagal tone

When cosmonaut Dr. Polyakov through a low vagal tone, despite relatively low heart rate monitor. Only wдhrend of sleep increased vagal tone on the remarkably high values, which sank at the end of the flight and after Rьckkehr to earth on the day value. This special form of Vagusregulation was not observed in any other cosmonauts. During the flight, only a slight decrease in vagal tone in the wake of rest was observed. Also, this regulation is ungewцhnlich. The increase was significantly lower than the calculated values ​​with the other cosmonauts.

Ballisto and Seismoamplituden

After a anfдnglichen increase in the second month was an increase in amplitude until 8Months observed. After the flight, the values ​​in Ballistocardiogramm дhnlich were high as the Vorflugwerte, whereas in Seismocardiogramm observed a significant increase in the amplitude of a seismograph, and to a lesser AusmaЯ of Seismo was 2. At the Seismo 1 and 2 Seismo amplitude, a rise due to the dynamometry can be observed, was the first flight in ausgeprдgt months spдter gradually decreased and disappeared towards the end of the flight.

Amplitude of the electrocardiogram

The ECG amplitude erhцhte to 250% of Vorflugwerte wдhrend the first 6 months. Towards the end of the flight Vorflugwerte were achieved and after the flight was a very strong reduction in the ECG amplitude was observed.

Autonomic control of heart rate in Album list

The peculiarities of heart rate regulation in Dr. Polyakov has already been made in vagal tone. Noticed in the sympathetic regulation, the values ​​at daЯ Dr. Polyakov was also very low, ie The cosmonaut was low at rest ungewцhnlich Aktivitдt. This kцnnte the low heart rate erklдren despite low vagal tone.


Although only a trained physician was a cosmonaut, an astonishing number of experiments could be durchgefьhrt successfully. One of the most interesting findings concerned the least costly experiment NIGHT. Using a simple Einkanalbeschleunigungssensors differentiation between non-REM and REM stages of sleep was mцglich. The pattern of movements wдhrend of sleep could be observed and the respiratory rate determined during sleep. The more complicated experiment SLEEP fьr served here as a reference the results obtained in the framework of NIGHT.

All data showed how amazingly flexible when it stopped the autonomic regulation of heart rate on the specific conditions of weightlessness. Wдhrend even the long-term flight was never a critical condition of the circulatory system observed in cosmonauts. It can be said that in the Rьckkehr daЯ gravity is the most critical phase of flight. Wдhrend erhцht this phase is the heart rate significantly reduces the Schlafqualitдt and reduces the vagal tone.Also reduced the increase in the cardiac muscle on Kontraktilitдt dynamometrical load, which is observed in the Ballisto and Seismoamplituden. The pulse wave velocity, the response of the arterial system shows little changes, without doubts wдhrend the flight, only the third flight wдhrend month, an increase was observed.

Since there is a significant momentum in several physiological parameters wдhrend was the third month, can be assumed daЯ this time is the second critical phase, wдhrend of an adaptation to weightlessness happens, and this phase was less than the ausgeprдgt Nachflugphase.